RT Journal Article SR Electronic T1 Multiple sclerosis and risk of cancer: a meta-analysis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1413 OP 1414 DO 10.1136/jnnp.2009.195776 VO 81 IS 12 A1 Adam E Handel A1 Sreeram V Ramagopalan YR 2010 UL http://jnnp.bmj.com/content/81/12/1413.abstract AB